/* **********************************************************
 * Copyright (c) 2011-2020 Google, Inc.  All rights reserved.
 * Copyright (c) 2008-2010 VMware, Inc.  All rights reserved.
 * **********************************************************/

/*
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of VMware, Inc. nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without
 *   specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL VMWARE, INC. OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

/*
 * drlibc_unix.h - declarations shared among UNIX-specific drlibc files and
 * the core.
 */

#ifndef _DRLIBC_UNIX_H_
#define _DRLIBC_UNIX_H_ 1

/* Cross arch syscall nums for use with struct stat64. */
#ifdef MACOS64
#    define SYSNUM_STAT SYS_stat64
#    define SYSNUM_FSTAT SYS_fstat64
#elif defined(X64)
#    ifdef SYS_stat
#        define SYSNUM_STAT SYS_stat
#    endif
#    define SYSNUM_FSTAT SYS_fstat
#else
#    define SYSNUM_STAT SYS_stat64
#    define SYSNUM_FSTAT SYS_fstat64
#endif

/* On Mac, we use the _nocancel variant to defer app-initiated thread termination */
#ifdef MACOS
#    define SYSNUM_NO_CANCEL(num) num##_nocancel
#else
#    define SYSNUM_NO_CANCEL(num) num
#endif

/* Maximum number of arguments to Linux syscalls. */
enum { MAX_SYSCALL_ARGS = 6 };

bool
safe_read_if_fast(const void *base, size_t size, void *out_buf);

#endif /* _DRLIBC_UNIX_H_ */
